The JS Auto Form Validator is an easy-to-setup form validation script which enables you to handle the whole form validation process without writing any JavaScript code. This script allows you to specify certain form elements as "required" or "non-required" and also what specific type they have: text, password, numeric, zip code, etc. The script automatically checks all required elements before allowing the form submission in order to make sure that they are not empty and that a valid type value was entered.

Larrys Form Generation creates HTML forms using jQuery for validation. It can generate HTML for different types of form elements, including inputs, labels, and form start and end sections. The generated HTML includes JavaScript which can validate the form inputs either when the inputs are changed or when the form is submitted. The validation can be done according to certain rules, and it uses the jQuery JavaScript library and a JavaScript class provided separately.

Android Saripaar is a simple, yet powerful rule-based UI validation library for Android. It following features declarative style validation powered by Annotations, synchronous and asynchronous validations (you don't have to worry about threading), compatibility with Stock Android Widgets, custom view dependencies, quick setup (just download the jar and include it in your libs project folder), removal of most of your validation logic from your code, and compatibility with other annotation frameworks such as AndroidAnnotations, RoboGuice, etc.,

validator.py is a tool for ensuring that data conforms to certain sets of rules, called validations. A validation is essentially a schema for a dictionary, containing a list of rules for each key/value pair in the dictionary you want to validate. This is intended to fill a similar use case to form validations in WTForms or Rails, but for general sources of data, not just Web forms.